public static IEnumerable <IFluentPathValue> IntegerEval(this IEnumerable <IFluentPathValue> focus)
{
if (focus.JustValues().Count() == 1)
{
var val = focus.Single().Value;
if (val != null)
{
if (val is long)
{
return(FhirValueList.Create((long)val));
}
//if (val is decimal) return (Int64)Math.Round((decimal)val);
if (val is string)
{
long result;
if (Int64.TryParse((string)val, out result))
{
return(FhirValueList.Create(result));
}
}
}
}
return(FhirValueList.Empty());
}
public static IEnumerable <IFluentPathValue> Create(params object[] values)
{
if (values != null)
{
return(values.Select(value => value == null ? null : value is IFluentPathValue ? (IFluentPathValue)value : new TypedValue(value)));
}
else
{
return(FhirValueList.Empty());
}
}
public static IEnumerable <IFluentPathValue> Substring(this IEnumerable <IFluentPathValue> focus, long start, long?length)
{
if (focus.Count() == 1)
{
if (focus.First().Value != null)
{
var str = focus.First().AsStringRepresentation();
if (length.HasValue)
{
return(FhirValueList.Create(str.Substring((int)start, (int)length.Value)));
}
else
{
return(FhirValueList.Create(str.Substring((int)start)));
}
}
}
return(FhirValueList.Empty());
}